.repertoire {
  background: var(--color-surface);
}

.repertoire__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
}

/* Grid */
.repertoire__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* Tarjeta con efecto 3D */
.rep-card {
  perspective: 800px;
  cursor: pointer;
}

.rep-card.is-hidden {
  display: none;
}

.rep-card__inner {
  position: relative;
  height: 280px;
  transform-style: preserve-3d;
  transition: transform var(--duration-slow) var(--ease-out);
}

.rep-card:hover .rep-card__inner {
  transform: rotateY(180deg);
}

.rep-card__front,
.rep-card__back {
  position: absolute;
  inset: 0;
  padding: 2rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.rep-card__front {
  background: var(--color-surface-2);
  background-image: linear-gradient(
    135deg,
    rgba(201, 168, 76, 0.03) 0%,
    transparent 60%
  );
}

.rep-card__back {
  background: var(--color-accent);
  transform: rotateY(180deg);
  justify-content: space-between;
  border-color: var(--color-gold-dim);
}

.rep-card__composer {
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}

.rep-card__title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.rep-card__cat {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.rep-card__back p {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  line-height: 1.7;
}

.rep-card__meta {
  font-size: var(--text-xs);
  color: var(--color-gold-dim);
  letter-spacing: 0.05em;
}

/* Modo mouse-tracking 3D (se aplica via JS cuando NO hay hover flip) */
.rep-card--tilt .rep-card__inner {
  transition: transform 0.1s ease;
}